<div class="apiDetail">
	<div>
		<h2>
			<span>Function(expandFlag)</span><span class="path">zTreeObj.</span>expandAll
		</h2>
		<h3>
			Overview<span class="h3_info">[ depends on <span class="highlight_green">jquery.ztree.core</span> js ]
			</span>
		</h3>
		<div class="desc">
			<p></p>
			<div class="longdesc">
				<p>Expand or collapse all nodes.</p>
				<p class="highlight_red">This method does not trigger 'beforeExpand / onExpand' or 'beforeCollapse / onCollapse'
					callback function.</p>
				<p class="highlight_red">Please use zTree object to executing the method.</p>
			</div>
		</div>
		<h3>Function Parameter Descriptions</h3>
		<div class="desc">
			<h4>
				<b>expandFlag</b><span>Boolean</span>
			</h4>
			<p>expandFlag = true means: expand all nodes.</p>
			<p>expandFlag = false means: collapse all nodes.</p>
			<h4 class="topLine">
				<b>Return </b><span>Boolean</span>
			</h4>
			<p>return the result of expand or collapse.</p>
			<p>true means: expand all nodes</p>
			<p>false means: collapse all nodes</p>
			<p>null means: have no parent node to expand or collapse.</p>
		</div>
		<h3>Examples of function</h3>
		<h4>1. Expand all nodes</h4>
		<pre xmlns="">
			<code>var treeObj = $.fn.zTree.getZTreeObj("tree");
treeObj.expandAll(true);
</code>
		</pre>
	</div>
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